// johnsjava.webs.com

public class Variables
{
	public static void main(String[] args)
	{
		//integers();
		//doubles();
		//characters();
		//strings();
		//others();
	}

	public static void integers()
	{
		int a = 1;
		int b;
		b = 2;
		int c = 3, d;
		d = 4;

		System.out.println(a);
		a = b+c;
		System.out.println(a);
		a = b-c;
		System.out.println(a);
		a = b*c;
		System.out.println(a);
		a = b/c;
		System.out.println(a);
	}

	public static void doubles()
	{
		double a = 9.5;
		double b = 12.5;
		double c = 5.0/7;

		System.out.println(a);
		System.out.println(b);
		System.out.println(c);

		int i = (int)a;
		System.out.println(i);

		a = b+(c/12.5);
	}

	public static void characters()
	{
		char a = 'A';
		char b = '\n';
		char c = '\t';
		int i = (int)a;

		System.out.println(a);
		System.out.println(b);
		System.out.println(c);
		System.out.println(i);
		System.out.println((char)(i+1));
	}

	public static void strings()
	{
		String s = "Hello";
		String a = s.substring(0,3);
		String b = s.substring(0, s.length());
		System.out.println(s);
		System.out.println(a);
		System.out.println(b);

		String c = a + "a;flkj" + '\n' + 12 + " " + 12.5;
		System.out.println(c);
	}

	public static void others()
	{
		byte b= (int)1;
		short s= (int)2;
		long l = 197907097;
		float f= 1.2f;
		boolean b1 = true;
		boolean b2 = false;

		System.out.println(b);
		System.out.println(s);
		System.out.println(l);
		System.out.println(f);
		System.out.println(b1);
		System.out.println(b2);
	}
}